Watts Premier WP531517 Reverse Osmosis System

Watts Premier 531517 Zero Pure Plus brings nothing but optimal efficiency and performance as far as water filtration is concerned. This is a newer model from Watts Premier and perhaps one of the first RO systems out there that’s designed with a complete water conservation feature.

Key Features:
  • Removes more than 1000 different contaminants
  • Feature a booster pump to enhance the system performance
  • Suitable for use in areas with low municipal water pressure

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Things we like

  • Removes more than 1000 different contaminants
  • Feature a booster pump to enhance the system performance
  • Suitable for use in areas with low municipal water pressure
  • The ZeroWaste technology ensures 100% water efficiency
  • Decent production capacity of 50 gallons per day
  • Setting it up is fairly simple same as changing the filters
  • An indicator to inform you when it’s time to change filters
  • Comes with a 1-year limited warranty

Things we don't like

  • Requires electricity which can make installation tricky for first-timers
  • The ZeroWaste technology may result in additional electricity cost

Watts Premier 531517 Zero Pure Plus brings nothing but optimal efficiency and performance as far as water filtration is concerned. This is a newer model from Watts Premier and perhaps one of the first reverse osmosis systems out there that’s designed with a complete water conservation feature.

It’s a combination of the superb functionality of the Watts Premier RO Pure Plus model and the water-saving ability of the patented Watts Premier ZeroWaste technology with the addition of a booster pump. For those struggling with regular low municipal water pressure, this may be just the right Watts Premier RO system for you.

Filtration Process

The 531517 Zero Pure Plus model like the RO Pure Plus employs a 4-stage water filtration process made up of two pre-filters, an RO membrane, and a carbon post-filter.

The first line of defense is a sediment filter which completely removes all suspended particles such as rust, dirt, silt, sand, and sediments from the incoming water down to 5-microns.

The 2nd stage uses a carbon pre-filter with also a 5-micron filtration capability and it quite effectively eliminates natural organic compounds and chemical contaminants like chlorine, VOCs, and chloramines, as well as unpleasant tastes, odor, and particulates.

A TFC RO membrane with pores sized 0.0001 microns sits in the 3rd stage where its tiny pores provide a high rejection rate of about 98% which ultimately clears out more than 1000 different microscopic contaminants such as heavy metals, bacteria, viruses, cysts, and also dissolved solids like calcium and sodium among many others.

The 4th and final stage is taken up by a special 1-micron VOC carbon post-filter which refines the filtered water by extracting any residual odors or taste residues from the RO tank. It as well helps remove any remaining chlorine, VOCs, and other major contaminants missed by the RO membrane and the pre-filters like atrazine and MTBE’s giving you clean pure drinking water.

Booster Pump

One of the outstanding things about this Zero Pure Plus model is that it comes incorporated with a booster pump which is a big bonus especially if your water source pressure is below the normal 60 psi municipal water pressure.

This useful device helps to increase the pressure of the water going into the system at the inlet. It can raise the pressure from as low as 40 psi or lower up to around 80 psi which not only boosts the performance of the system but also enhances its efficiency.

It does guarantee too much quality filtered water than when depending only on the municipal water pressure. Therefore, if you are struggling with low water pressure, then this is a feature you will no doubt appreciate.

Filtration Capacity and Efficiency

The Watts 531517 Zero Pure Plus system is rated to produce 50 gallons of pure water a day which as we’ve mentioned several times above is sufficient to allow a small or fairly medium family to enjoy clean drinking water daily.

Now the major highlight of this Watts Premier RO unit is its exceptionally high water efficiency which is brought about by the patented ZeroWaste (R) design. This very innovative technology enables the system to return the wastewater it generates back into your home’s hot water supply.

This way no water is wasted making the system 100% efficient which is pretty commendable considering that most other similar RO systems waste up to 4 gallons or more for each gallon of pure water produced.

Installation and Maintenance

The unit is provided with every necessary thing you need to set it up and it can be typically installed by anyone that’s handy or at least has basic DIY skills.

It may, however, be somewhat tricky if there’s no existing power outlet where you planning to set it up as you will have to have one installed which may call for a plumber if you are not that handy. The pump requires a 110V electrical outlet that’s non-switched to power it up.

Changing the filters when performing maintenance is simple with each cartridge featuring a push button that allows the filters to easily snap out and be replaced by new ones.

Furthermore, the cartridges feature double O-rings to prevent leaking plus there are check valves installed between the elements to ensure no backflow of water into the system.

Even much better, the faucet it comes with has an indicator with a timer which keeps track of the filter life and lets you know when it’s time to change them by displaying a blinking red light.

You will have to replace the two pre-filters after every 6 months, the RO membrane once after 2 to 5 years, and the post-filter after one year. The booster pump is relatively silent while running hence won’t cause any distractions while you are trying to have a conversation in the kitchen.

The downside with this unit is that even though it reduces the cost of water, it utilizes the pump to return the wastewater to the house which translates to additional energy costs compared to other RO systems with a booster pump. That’s the only major thing you will have to worry about.

In general, if your source water pressure is quite low or you are really concerned with the high wastewater rates of most RO systems, then we would very much recommend getting this Watts Premier 531517 Zero Pure Plus RO system.

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Historical Price Chart

This is one-year-history price chart of the Watts Premier WP531517 Reverse Osmosis System.

Note: This price chart is provided for reference purpose only.

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Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System
Watts Premier WP531517 Reverse Osmosis System

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